From: Lizard Blizzard
Newsgroups: sci.electronics.components,sci.electronics.design,alt.engineering.electrical
Subject: Re: V regulator input cap size?
Date: Tue, 22 Oct 2002 09:16:01 -0700
Organization: CSUnet
Message-ID:
References: <0001HW.B9D991AD000C5917163F7590@news.covad.net> <3db451b5.4005327@news.texas.net> <0001HW.B9D9CD54001A5D15163F7590@news.covad.net> <3DB4D802.519D9110@bellatlantic.net>
NNTP-Posting-Host: 204.75.249.20
Mime-Version: 1.0
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1) Gecko/20020826
X-Accept-Language: en-us, en
ehsjr@bellatlantic.net wrote:
[snip]
> That 300 ma is probably high - but your minimum is 200 ma,
> which still leaves a total of about 6.2 watts to be dissipated.
> Finding a lower current relay would be a big help.
That is a really good idea. Use a much higher voltage, much lower
current relay. The 28V coil relay would cut the current to less than
half of that for a 12V relay. The relay would be connected to the PS
ahead of the regulator. This is often done in equipment for this very
reason, to cut down on the regulator power demands. It allows cheaper
equipment to use a low power regulator, or even just an inexpensive
zener diode shunt regulator.
[snip]
--
----------------(from OED Mini-Dictionary)-----------------
PUNCTUATION - Apostrophe
Incorrect uses: (i) the apostrophe must not be used with a plural
where there is no possessive sense, as in ~tea's are served here~;
(ii) there is no such word as ~her's, our's, their's, your's~.
Confusions: it's = it is or it has (not 'belonging to it'); correct
uses are ~it's here~ (= it is here); ~it's gone~ (= it has gone);
but ~the dog wagged its tail~ (no apostrophe).
----------------(For the Apostrophe challenged)----------------
From a fully deputized officer of the Apostrophe Police!